Chair-caster



T. FRY.

CHAIR GASTER.

o. 27,792. Patented Apr. 10, 1860.

J v I'M O v \J UNITED STATES PATENT OFFICE.

THOMAS FRY, OF BROOKLYN, NEW YORK.

CHAIR-(EASTER.

Specification of Letters Patent No. 27,792, dated April 10, 1860.

To all whom 'it may concern:

Be it known that I, THOS. FRY, of Brooklyn, in the county of Kings,State of New York, have invented a new and useful Improvement in Castersfor Chairs; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawing, forming a part of this specification.

The chair or sofa caster, in common use, is attended with seriousdisadvantages, arising from the fact, that the point of bearing, of thechair, upon the wheel, is so far, from the center, that it continuallygets out of order, by bending the central stock or breaking the legs ofthe furniture, especially the delicate and most costly chairs, whichinvolves the necessity of the ripping, the whole chair in pieces, andinserting an entire new leg. To overcome this defect, casters have beenmade having their bearing points upon the wheel, so near the centralstock, in order to gain strength or avoid straining, that the wheel,will not readily turn around, in the direction, you wish it to travel,but will in most cases, present its flat side, to the line of travel,the consequences of which, is a constant scraping and wearing of themost costly carpets.

The accompanying drawing represents a sectional view of my invention.

To enable those skilled in the art, to make and use my invention I willproceed to describe its construction and operation, with reference tothe drawing.

To remove all these difficulties of the common caster is the object ofmy invention, which consists in aflixing to the central stock C, apermanent cap, or base, marked F, around which, the usual wheel, orcaster, will revolve, also aflixing, a spring, marked B, made of indiarubber or metal, around the central stock C, to operate with the casteror wheel marked D D, with sufficient power to overcome the weight of thechair, which being empty, will be supported on wheels or casters uponsprings, B. \Vhen any very heavy person sits upon the chair the springwill allow the caster, or wheel, to slide up. The chair will then standfirmly upon the floor by means of the cap or base F. This method willallow the bearing of the chair, to be placed at a proper distance, fromthe central stock, the wheel will then easily present its proper side tothe line of travel, these springs will, in some measure, act as springsin the seat, and for the same purpose.

lVhat I claim as new and desire to secure by Letters Patent, is-

The combination and arrangement of the stock C the base F, the spring Bwith the wheel D D, substantially as, and for the purpose specified.

THOS. FRY.

Vitnesses:

WM. H. Horn, THOMAS C. SMITH.

